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Merck
CN

PHR2529

Naproxen Impurity E

Pharmaceutical Secondary Standard; Certified Reference Material

Synonym(s):

(S)-Naproxen methyl ester, (2S)-2-(6-Methoxy-2-naphthyl)propionic acid methyl ester, Methyl (αS)-6-methoxy-α-methyl-2-naphthaleneacetate, Methyl (2S)-2-(6-methoxynaphthalen-2-yl)propanoate

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About This Item

Empirical Formula (Hill Notation):
C15H16O3
CAS Number:
26159-35-3
Molecular Weight:
244.29
NACRES:
NA.24
UNSPSC Code:
41116107
Beilstein/REAXYS Number:
4352971
MDL number:
MFCD12031841

Key Documents

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Product Name

Naproxen Impurity E, Pharmaceutical Secondary Standard; Certified Reference Material

SMILES string

C[C@H](C(OC)=O)C1=CC2=CC=C(OC)C=C2C=C1

InChI

1S/C15H16O3/c1-10(15(16)18-3)11-4-5-13-9-14(17-2)7-6-12(13)8-11/h4-10H,1-3H3/t10-/m0/s1

InChI key

ZFYFBPCRUQZGJE-JTQLQIEISA-N

grade

certified reference material
pharmaceutical secondary standard

Quality Level

300

agency

Not traceable to any primary pharmacopeia standard

API family

naproxen

form

solid

CofA

current certificate can be downloaded

packaging

pkg of 100 mg

application(s)

pharmaceutical small molecule

storage temp.

2-30°C

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Analysis Note

These secondary standards offer multi-traceability to the USP and EP primary standards, where they are available.

Application

These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.

General description

Pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.
To see an example of a Certificate of Analysis for this material enter LRAC6378 in the Documents slot below. This is an example certificate only and may not be the lot that you receive.

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Repr. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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